MARY ELLEN O'BRIEN M.D.
NPI 1144425000
Internal Medicine in Providence, RI

Q: What is Mary Ellen O'brien's NPI number?

The NPI number for Mary Ellen O'brien is 1144425000. It was assigned to this individual provider in the NPPES registry on June 19, 2007.

Q: What is Mary Ellen O'brien's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since June 19, 2007PECOS EnrolledAccepts Medicare Assignment

82.78/100

CMS Quality Rating

593 EDDY ST, PROVIDENCE, RI 02903(401) 444-4083(401) 444-3056 Get Directions Write a Review

NPPES record last updated: January 22, 2010. Verified against the NPPES registry weekly; last sync: September 20, 2026.

On this page

About Mary Ellen O'brien M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARY ELLEN O'BRIEN M.D. (NPI 1144425000) is an individual internal medicine provider in Providence, Rhode Island, licensed in Rhode Island (LP01243) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS, is affiliated with South Shore Hospital, and is a graduate of Other (2007).

NPPES Registry Identity

NPI1144425000

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameMARY ELLEN O'BRIENCredential: M.D.

Location Address593 EDDY STProvidence, RI 02903-4923

Mailing Address593 Eddy StProvidence, RI 02903-4923 · (401) 444-4083 · Fax (401) 444-3056

Phone(401) 444-4083

Fax(401) 444-3056

Sole ProprietorNo

Medical School CMSOtherGraduated 2007

Enumeration DateJune 19, 2007

Last NPPES UpdateJanuary 22, 2010

✔ NPI 1144425000 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in RI · LP01243

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

593 EDDY ST, Providence, RI 02903

Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mary Ellen O'brien M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1951435957

PECOS Enrollment IDI20100812000637

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

395 services381 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

68 services68 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

22 services21 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

12 services12 patients

Initial hospital care with same-day admission and discharge with moderate level of medical decision making, per day, if using time, at least 70 minutes 99235

This service involves a brief hospital stay for a moderate health issue. You'll be admitted and discharged on the same day, typically within 50 minutes. It's a quick, efficient way to receive necessary care and medical attention.

11 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

South Shore Hospital

Acute Care Hospitals · South Weymouth, MA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220100

Location55 Fogg RoadSouth Weymouth, MA 02190 · Norfolk County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02903 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$134.17 typical visit price

range $58.57 – $177.03

Typical copayment $33.54 (range $14.64 – $44.25)

Most-billed visit code 99204

Established Patient

$103.10 typical visit price

range $18.92 – $144.38

Typical copayment $25.77 (range $4.73 – $36.09)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

82.78/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

88.33

Promoting Interoperability

Improvement Activities

Cost

69.53

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. KEITH-AUSTIN SCARFO D.O.

Anesthesiology

593 EDDY ST, APC 6
PROVIDENCE, RI 02903

Providence County (401) 444-3777

AILEEN HSUEH

Surgery

593 EDDY ST
PROVIDENCE, RI 02903

Providence County (401) 444-8450

RHODE ISLAND HOSPITAL

General Acute Care Hospital

593 EDDY ST, MAIN 4
PROVIDENCE, RI 02903

Providence County (401) 444-7585

DR. GA HIE NAM M.D.

Pathology (Anatomic Pathology & Clinical Pathology)

593 EDDY ST
PROVIDENCE, RI 02903

Providence County (401) 444-5057

EUGENIE ATALLAH

Psychiatry & Neurology (Neurology)

593 EDDY ST
PROVIDENCE, RI 02903

Providence County (401) 606-2645

BRIAN CAO MD

Student in an Organized Health Care Education/Training Program

593 EDDY ST
PROVIDENCE, RI 02903

Providence County (401) 606-4286

BRET CAULFIELD

Physician Assistant

593 EDDY ST
PROVIDENCE, RI 02903

Providence County (401) 444-4000

JUNG HO GONG

Student in an Organized Health Care Education/Training Program

593 EDDY ST
PROVIDENCE, RI 02903

Providence County (401) 793-2695

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Ellen O'brien's NPI number?

The NPI number for Mary Ellen O'brien is 1144425000. It was assigned to this individual provider in the NPPES registry on June 19, 2007.

Where is Mary Ellen O'brien located?

Mary Ellen O'brien practices at 593 Eddy St, Providence, RI 02903. The listed phone number is (401) 444-4083.

What is Mary Ellen O'brien's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Mary Ellen O'brien enrolled in Medicare?

Yes. Mary Ellen O'brien is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Mary Ellen O'brien affiliated with any hospitals?

According to CMS data, Mary Ellen O'brien is affiliated with South Shore Hospital.

When was this NPI record last updated?

The NPPES record for Mary Ellen O'brien was last updated on January 22, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.